Oreomunnea 11 claims

Claim · model-written summary

A root-tip survey identified 115 ectomycorrhizal fungal taxa from 234 Oreomunnea root tips across four sites.

Taxon

OreomunneaOreomunneae0

Organ / stage

root tipse0

Interactor

EMe0symbiont

Outcome

EM fungal taxae0

Value

115 EM fungal taxae0

Qualifier

234 EM Oreomunnea root tipse0

Verbatim

e0

“In a survey of Oreomunnea root tips using sanger sequencing, I identified 115 EM fungal taxa from 234 EM Oreomunnea root tips collected from four sites across a soil fertility gradient.”

Claim · model-written summary

Oreomunnea-associated EM fungal communities showed high turnover and significant compositional variation with soil fertility.

Taxon

OreomunneaOreomunneae0

Interactor

EMe0symbiont

Outcome

EM fungal compositional variatione0

Qualifier

high compositional turnovere0

Setting

soil fertilitye0

Not reportedDirection

Verbatim

e0

“There was a high compositional turnover in the EM fungal communities associated with Oreomunnea with a significant effect of soil fertility on EM fungal compositional variation.”

Claim · model-written summary

There was no evidence that pathogen resistance generated positive feedback on Oreomunnea abundance.

Taxon

OreomunneaOreomunneae0

Treatment

pathogen resistancee0

Outcome

positive feedback on Oreomunnea abundancee0

Qualifier

no evidencee0

Verbatim

e0

“After testing these three hypotheses I found no evidence for positive feedback on Oreomunnea abundance caused by either pathogen resistance or the formation of mycorrhizal networks.”

Claim · model-written summary

There was no evidence that mycorrhizal networks generated positive feedback on Oreomunnea abundance.

Taxon

OreomunneaOreomunneae0

Treatment

formation of mycorrhizal networkse0

Outcome

positive feedback on Oreomunnea abundancee0

Qualifier

no evidencee0

Verbatim

e0

“After testing these three hypotheses I found no evidence for positive feedback on Oreomunnea abundance caused by either pathogen resistance or the formation of mycorrhizal networks.”

Claim · model-written summary

Nine years of nitrogen addition significantly changed the composition of Oreomunnea-associated EM fungal communities relative to control plots.

Taxon

OreomunneaOreomunneae0

Treatment

nitrogen addition treatmente0

Interactor

EMe0symbiont

Outcome

species composition of the EM fungal communitye0

Qualifier

nine yearse0

Comparator

control plotse0

Not reportedDirection

Verbatim

e0

“I studied EM fungal communities associated with Oreomunnea in control plots and plots that had received a nitrogen addition treatment for nine years, I found a significant difference in the species composition of the EM fungal community between plot treatments, and differences in the abundance of some genera.”

Claim · model-written summary

Russula isotopic composition indicated greater host demand for fungal nitrogen as soil inorganic nitrogen declined.

Taxon

OreomunneaOreomunneae0

Interactor

RussulaRussulae0symbiont

Compound

soil inorganic nitrogene0

Outcome

host demand for ectomycorrhizal fungal nitrogen supplye0

Direction

increasede0

Qualifier

reduction in soil inorganic nitrogen availabilitye0

Verbatim

e0

“After analyzing the δ15N and δ13C of Russula fruiting bodies, and its correlation with Oreomunnea host abundance and soil inorganic N availability, I found that the isotopic composition of the Russula community reflects increased host demand for ectomycorrhizal fungal nitrogen supply with a reduction in soil inorganic nitrogen availability.”

Claim · model-written summary

Host abundance, nitrogen availability and fungal nitrogen transfer to the host were highly correlated.

Taxon

OreomunneaOreomunneae0

Interactor

EM fungie0symbiont

Compound

Ne0

Outcome

host abundancee0

Qualifier

high correlation of host abundance, N availability, and N transfer from EM fungi to the hoste0

Not reportedDirection

Verbatim

e0

“Given the high correlation of host abundance, N availability, and N transfer from EM fungi to the host (reflected in fruiting body δ15N) in our system here I provide further evidence that the formation of Oreomunnea dominated forest is facilitated by its associated EM fungi.”

Claim · model-written summary

Associated EM fungi facilitate Oreomunnea-dominated forest formation by altering nitrogen cycling.

Taxon

OreomunneaOreomunneae0

Interactor

EM fungie0symbiont

Outcome

formation of Oreomunnea dominated foreste0

Qualifier

altering the N cyclee1

Verbatim

e0

“Given the high correlation of host abundance, N availability, and N transfer from EM fungi to the host (reflected in fruiting body δ15N) in our system here I provide further evidence that the formation of Oreomunnea dominated forest is facilitated by its associated EM fungi.”

e1

“In conclusion I found that EM fungi are highly diverse in tropical montane forest and that they can facilitate the formation of monodominant forest of EM associated tree species by altering the N cycle.”

Claim · model-written summary

The author predicts atmospheric nitrogen deposition could alter EM fungus–host interactions and cause ecosystem changes.

Taxon

OreomunneaOreomunneae1

Treatment

atmospheric N depositione0

Interactor

EM fungie0symbiont

Outcome

biotic and abiotic changes in the ecosysteme0

Qualifier

could potentially alter the interactione0

Verbatim

e0

“Also, I predicted increase in N availability due to atmospheric N deposition, could potentially alter the interaction between EM fungi and their host plant potentially leading to biotic and abiotic changes in the ecosystem.”

e1

“Oreomunnea associates with a diverse community of ectomycorrhizal fungi.”

Claim · model-written summary

The authors attribute the current allopatric distribution of Engelhardia and Oreomunnea to Neogene regional extinctions.

Taxon

Engelhardia and OreomunneaEngelhardiaOreomunneae0

Outcome

present allopatric distributione0

Qualifier

Neogene regional extinctionse0

Verbatim

e0

“The present allopatric distribution of Engelhardia and Oreomunnea is the result of Neogene regional extinctions.”